Estimation: estimating base rates & calibration

Define the concept of the base rate.

We'll now do some base rate estimation tasks, to train you to estimate numbers. We'll use that also when practicing Fermi estimates! :) Ok?

The number of gum-balls in the jar is ... (round to nearest power of 10, i.e. 10, 100, 1000, 10000, etc.)

(a)  

The number of long-distance trains (ICE, BOB, etc.) that are waiting at the platforms is typically (@ Munich Hbf)

The number of people that buy a coffee (during non-corona times) on a typical day at a small neighborhood cafe is

The number of people that buy a coffee (during non-corona times) on a typical day at the Backwerk in Hauptbahnhof

On a yearly basis, the base rate of flu (Grippe) infections in Germany is:

On a yearly basis, the base rate of (deadly) car accidents per capita is (pro Kopf pro Jahr):

The number of hours a typical Gymnasium student spends doing homework, on a yearly basis, is

Per year and per capita, how many liters of coca cola and cola-mixtures do Germans consume (also, liter pro Kopf)?